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Alnylam Pharmaceuticals

645 hedge funds and large institutions have $43B invested in Alnylam Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 96 funds opening new positions, 257 increasing their positions, 214 reducing their positions, and 62 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more funds holding

Funds holding:

3.41% more ownership

Funds ownership: 97.81%101.22% (+3.4%)

8% less call options, than puts

Call options by funds: $188M | Put options by funds: $203M

10% less funds holding in top 10

Funds holding in top 10: 109 (-1)

Holders
645
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
9
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$188M
Puts
$203M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
TAF
226
Tredje AP-fonden
Sweden
$3.98M
SCM
227
Sterling Capital Management
North Carolina
$3.94M
Wealthfront Advisers
228
Wealthfront Advisers
California
$3.94M
ZIM
229
Zacks Investment Management
Illinois
$3.89M
EAMA
230
EFG Asset Management (Americas)
Florida
$3.79M
RAM
231
Readystate Asset Management
Illinois
$3.78M
AssetMark Inc
232
AssetMark Inc
California
$3.76M
Mirae Asset Global ETFs Holdings
233
Mirae Asset Global ETFs Holdings
Hong Kong
$3.76M
Nordea Investment Management
234
Nordea Investment Management
Sweden
$3.64M
CFB
235
Cullen/Frost Bankers
Texas
$3.52M
CFM
236
Catalyst Funds Management
Australia
$3.51M
GC
237
Guggenheim Capital
Illinois
$3.47M
William Blair & Company
238
William Blair & Company
Illinois
$3.45M
SAM
239
Silvercrest Asset Management
New York
$3.34M
Cerity Partners
240
Cerity Partners
New York
$3.3M
Natixis Advisors
241
Natixis Advisors
Massachusetts
$3.3M
TCM
242
Traynor Capital Management
Pennsylvania
$3.29M
SCI
243
S&CO Inc
Massachusetts
$3.28M
Commonwealth Equity Services
244
Commonwealth Equity Services
Massachusetts
$3.24M
Cetera Investment Advisers
245
Cetera Investment Advisers
Illinois
$3.22M
PAMP
246
Polar Asset Management Partners
Ontario, Canada
$3.13M
ERSOT
247
Employees Retirement System of Texas
Texas
$3.09M
AB
248
Amalgamated Bank
New York
$3.09M
Mackenzie Financial
249
Mackenzie Financial
Ontario, Canada
$2.96M
DJSG
250
D.J. St. Germain
Massachusetts
$2.93M